Question

☆Mathematics Question☆​

Answer 1

Answer:

A 5m=60

m=60/5

=12

B P-5=5

P=5+5

=10

C x+4=2

x=2-4

x=-2.

Step-by-step explanation:

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Answer 2

Answer:

7-Given that,

Breadth of the hall = b m. Now, Length of the hall = = 3 × b − 4 = 3b − 4 ∴ Length of hall = (3b − 4) metres.

8-(a)5m=60

Putting the given values in L.H.S.,

5 x 10 = 50, 5 x 5 = 25

∵ L.H.S. ≠ R.H.S. ∵ L.H.S.≠ R.H.S.

∴m=10 is not the solution. ∴m=5 is not the solution.

5 x 12 = 60, 5 x 15 = 75

∵ L.H.S. = R.H.S. ∵ L.H.S. ≠ R.H.S.

∴m=12 is a solution. ∴m=15 is not the solution.

(b)p–5=5

Putting the given values in L.H.S.,

0 – 5 = –5, 10 – 5 = 5

∵ L.H.S. ≠ R.H.S. ∵ L.H.S. = R.H.S.

∴p=0 is not the solution. ∴p=10 is a solution.

5 – 5 = 0, –5 – 5 = –10

∵ L.H.S. ≠ R.H.S. ∵ L.H.S. ≠ R.H.S.

∴p=5 is not the solution. ∴p=–5 is not the solution.

(c)x+4=2

Putting the given values in L.H.S.,

–2 + 4 = 2, 0 + 4 = 4

∵ L.H.S. = R.H.S. ∵ L.H.S. ≠ R.H.S.

∴x=–2 is a solution. ∴x=0 is not the solution.

2 + 4 = 6, 4 + 4 = 8

∵ L.H.S. ≠ R.H.S. ∵ L.H.S. ≠ R.H.S.

∴x=2 is not the solution. ∴x=4 is not the solution.